21381584

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^2\times {\mathrm{227}}^1$

素因数の和:300

約数の個数: 60

約数和(自身を含む): 49249824

約数和(自身を除く): 27868240

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 112, 116, 203, 227, 232, 406, 454, 464, 812, 841, 908, 1589, 1624, 1682, 1816, 3178, 3248, 3364, 3632, 5887, 6356, 6583, 6728, 11774, 12712, 13166, 13456, 23548, 25424, 26332, 46081, 47096, 52664, 92162, 94192, 105328, 184324, 190907, 368648, 381814, 737296, 763628, 1336349, 1527256, 2672698, 3054512, 5345396, 10690792, 21381584]

約数ペア:

[(1, 21381584), (2, 10690792), (4, 5345396), (7, 3054512), (8, 2672698), (14, 1527256), (16, 1336349), (28, 763628), (29, 737296), (56, 381814), (58, 368648), (112, 190907), (116, 184324), (203, 105328), (227, 94192), (232, 92162), (406, 52664), (454, 47096), (464, 46081), (812, 26332), (841, 25424), (908, 23548), (1589, 13456), (1624, 13166), (1682, 12712), (1816, 11774), (3178, 6728), (3248, 6583), (3364, 6356), (3632, 5887)]